[USERINIT] Update Russian (ru-RU) translation

Sync with intl.cpl translation. Addendum to 8c9a41db960 & 30a4fa94e39.
Also add missing header.

base/system/userinit/lang/ru-RU.rc

···
+/*
+ * PROJECT:     ReactOS Userinit Logon Application
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE:     Russian resource file
+ * TRANSLATORS: Copyright 2006 Anton Belitsky (bmoof) <[e-mail]>
+ *              Copyright 2016 Alexey Shaltsin (BinaryTree) <[e-mail]>
+ *              Copyright 2016 Kudratov Olimjon <[e-mail]>
+ *              Copyright 2017 Nikolay Burshtyn <[e-mail]>
+ */
+
 LANGUAGE LANG_RUSSIAN, SUBLANG_DEFAULT
 
 IDD_LOCALEPAGE DIALOGEX 0, 0, 317, 193
···
 
 STRINGTABLE
 BEGIN
-    IDS_SPAIN "Spanish (Spain)"
+    IDS_SPAIN "Испанский (Испания)"
 END